Chapter 34

Charms began with Harry's hand already high on Hermione's thigh, fingers teasing the edge of her panties. She tried focusing on Flitwick's levitation review but kept squirming as his digits worked higher.

"Wingard- ahh!" she bit back a moan as Harry's middle finger found her clit through the damp silk. Her wand movement went wild, sending the feather crashing into the ceiling.

Meanwhile, his other hand had snaked under Lavender's skirt too. She was already soaking, thighs spreading wider as he toyed with her. Both girls struggled to maintain composure as his skilled fingers worked them steadily toward the edge.

"Miss Granger! Miss Brown! Pay attention!" Flitwick squeaked. Neither girl could form a coherent response.

In Transfiguration, Harry sat between them again, hands hidden by their shared desk. As McGonagall lectured about advanced transformations, he slipped his hands into their shirts and gave them a rough squeeze before pinching their nipples.

Lavender's mouse-to-teacup transfiguration went completely wrong when he pulled her nips up. The resulting ceramic abomination had whiskers and a tail.

Hermione wasn't doing much better. Her usual perfect wandwork suffered as Harry's thumb circled her nipple and squeezed right as she was about to say the spell each time. Her teacup ended up furry and squeaking.

"Ladies, please focus!" McGonagall snapped. "Mr. Potter, kindly keep your hands where I can see them."

Harry withdrew his fingers with agonizing slowness, making both girls shudder. He made a show of smelling his hands when McGonagall turned back to the board.

At lunch, he finally spoke while casually fondling them under the table. "Tonight's experiment will be special," he murmured. "You must have been pent up watching Parvathi and Padma enjoy with me not present."

Hermione choked on her juice while Lavender dropped her fork with a clatter.

"Might have to edge you for hours," he continued thoughtfully. "Or give you both dirty girls exactly what you need."

Both girls were squirming, their lunch forgotten as his fingers worked steadily. He brought them right to the edge before withdrawing completely.

"Better eat up," he smirked. "You'll need your strength."

In Potions, he was relentless. One hand placed below either of them before they could sit, pawing at their asses. 

"Potter," Snape practically spat the name. "The Headmaster has... informed me to tell you." His lip curled. "In light of the incident that happened, you are excused from your remaining detentions. Try not to let this... leniency further inflate your already considerable ego."

Harry's smirk was positively predatory as he met those cold eyes. "How very understanding of you, Professor. Your compassion is truly... touching."

He could actually hear Snape's teeth grinding as he sauntered to his workstation, deliberately brushing against Hermione's ass as she precisely diced flobberworms.

"Careful with that knife," he whispered, pressing against her from behind. His hands covered hers, ostensibly guiding her cutting motion. "Wouldn't want any... accidents."

Her perfectly measured cuts became ragged as his grinded against her with his member. Meanwhile, his foot slowly traced up the still seated Lavender's calf until his foot was almost in her wet cunt. She jerked, dumping far too much powdered lionfish spine into her cauldron. The potion turned a violent shade of orange and began smoking ominously.

"Miss Brown!" Snape barked. "That will be zero marks for today's effort. Clearly you need remedial instruction in basic measurement."

By the time class ended, both girls were flushed and trembling. Their ruined potions vanished with angry flicks of Snape's wand. Harry gathered his things with deliberate slowness, enjoying their obvious frustration.

"Ready to go?" he asked innocently, holding the door.

"Not yet," Hermione muttered through clenched teeth. "But very, very soon."

Harry's triumphant laugh echoed through the dungeon corridors as they headed for their special room. He had such delicious plans for tonight's "experiments."

Entering the research room, Harry found Ron and Neville already stripped down on conjured beds, their clothes scattered haphazardly. The Patil twins knelt between their legs, dark hair cascading over bare shoulders as they teased with light touches.

"Eager to start without me?" Harry chuckled, dropping his bag by the desk. Hermione and Lavender followed, still flushed and trembling from his relentless teasing all day.

"Someone's been wound up," Parvati smirked, noticing their state. "What'd he do this time?"

"Don't ask," Hermione muttered, trying to compose herself as she pulled out fresh parchment.

"You loved every second," Harry winked, settling into his chair. His hands immediately found both girls' thighs under the desk, making them jump. "But now it's time for some actual research."

"What's today's torture?" Ron groaned as Padma's tongue flicked across his tip.

"Nothing too complicated," Harry replied, fingers creeping higher under skirts. "Want you and Nev to try blocking your magic completely. Don't let it flow anywhere in your bodies."

"Bit difficult to concentrate with... fuck... this happening," Neville gasped as Parvati took him deep.

"That's kind of the point," Harry grinned. "Keep sucking, girls. Let's see what happens when they manage it."

His own hands were getting bolder, finding soaked panties under his friends' skirts. Both girls bit back moans as his fingers teased through the damp fabric.

"Should we... ahh... take notes?" Lavender whimpered as Harry's thumb found her clit.

"In a minute," he growled, already working at their clothes. "Got to release some of your tension first don't I..."

The experimental phase was about to begin properly, but Harry had other priorities to handle first. After all, he'd been teasing these two all day - time to deliver on those promises.

"Come here, you two," Harry growled, pulling Hermione and Lavender onto a large conjured bed. His fingers made quick work of their uniforms, tossing soaked panties and wrinkled skirts aside.

"Spread your legs," he commanded, positioning Hermione against the headboard while Lavender lay beside her. "Been thinking about tasting you both all fucking day."

His tongue delved into Hermione's folds, making her arch off the bed with a cry. Three fingers plunged into Lavender simultaneously, curling to hit that perfect spot inside her.

"Fuck... Harry!" Hermione gasped as he sucked her clit hard, his free hand pinching and rolling her nipples.

"Please..." Lavender whimpered as his fingers pumped faster. "Need more..."

He alternated between them mercilessly - tongue fucking Hermione while fingering Lavender, then switching to suck Lavender's clit while his fingers stretched Hermione's tight pussy. Both girls were reduced to incoherent moans, their hips bucking desperately against his mouth and hands.

"So fucking wet," he growled, tongue collecting their combined juices. "Been dripping for me all day, haven't you?"

"Yes!" they cried in unison as he brought them to the edge again.

Harry lined up with Hermione's entrance, teasing her with just the tip. "Beg for it."

"Please Harry," she whimpered. "Need you inside me... need your cock..."

He slammed home in one brutal thrust, making her scream. His thick length stretched her perfectly as he set a punishing pace, thumb still working Lavender's clit.

"So tight," he groaned, feeling Hermione's walls flutter around him. "Gonna fill you both up..."

He pulled out just before she came, immediately plunging into Lavender's waiting pussy. She arched off the bed with a desperate cry as he pounded into her, his fingers now working Hermione's oversensitive clit.

Back and forth he switched between them, never letting either girl come down from their building pleasure. Their combined moans echoed off the stone walls, mixing with the wet sounds of the twins still working Ron and Neville across the room.

Harry collapsed back, breath heavy. "Ladies... your turn." He beckoned with a knowing smirk. "Show me what you've learned."

Lavender straddled him immediately, sinking down with a satisfied moan as his thick length filled her. Meanwhile, Hermione pressed her breasts to his face, nipples already hard and begging for attention.

"Fuck yes," he growled into her soft flesh, tongue circling one peak while his hands gripped her curves. His hips thrust up to meet Lavender's eager bouncing.

"So deep," Lavender gasped, grinding down. Her walls clenched as she found the perfect angle. "Right there!"

Harry's mouth alternated between Hermione's breasts, sucking and biting until she whimpered. His hands guided Lavender's pace, speeding up as her moans grew desperate.

"Switch," he commanded roughly. The girls scrambled to trade places.

Hermione sank onto his cock with a satisfied sigh while Lavender offered her heavy tits to his hungry mouth. He devoured them greedily, leaving marks across her pale flesh.

"Gonna cum," Hermione panted, her pace growing erratic. Harry's thumb found her clit, sending her over the edge with a scream. Her pulsing walls triggered Lavender's climax too as his fingers worked between her thighs.

Standing on shaky legs, Harry guided them both to their knees. "Time for the real experiment. Keep sucking while I try suppressing my magic."

Their tongues worked his length together - Hermione focusing on his tip while Lavender licked his shaft. Even as he blocked his magical flow completely, his cock remained rock-hard, throbbing between their eager mouths.

"Fascinating," he mused, watching them share his member. Unlike Ron and Neville's failed attempts across the room, his arousal seemed purely physical. But that theory could wait - right now he had other data to collect.

Hermione took him deep while Lavender sucked his balls, both girls working him expertly. Even with magic fully suppressed, Harry's cock twitched with building pleasure.

"Fuck... gonna cum..." He groaned, fisting their hair. "Open those pretty mouths."

They knelt obediently, tongues out as he stroked himself. Thick ropes of cum painted their faces, dripping down their cheeks and across parted lips. They shared a cum-covered kiss as Harry caught his breath.

"Right then," he panted, tucking himself away. "Let's check our test subjects."

He approached Ron and Neville's beds where the Patil twins still worked desperately. Both boys looked constipated with concentration, their cocks completely soft despite the twins' skilled tongues.

"Interesting," Harry mused, casting diagnostic spells. Purple light showed zero magical flow in their bodies. "Complete suppression achieved but total loss of arousal. Let it flow again, yeah?"

The moment they released their magical blocks, both men sprang to attention. The twins dove back eagerly as Harry recorded his findings.

"So magic affects male arousal... unless you're me apparently," he grinned at the cum-covered girls collecting their clothes. "Might need more thorough testing to figure out why."

As the afterglow faded, Harry gathered everyone onto transfigured couches, still naked and satisfied from their activities.

"So what do we think is happening?" he asked, absently stroking Hermione and Lavender's hair as they curled against him.

"Could be evolutionary," Hermione suggested thoughtfully. "Magic wanting to ensure wizarding bloodlines continue..."

Ron nodded, Padma draped across his lap. "Makes sense. Can't exactly populate if you can't get it up without magic."

"Unless you're Harry bloody Potter," Neville chuckled, making Parvati giggle against his chest.

"That's what's odd," Lavender mused. "Why just Harry? Could be some curse affecting all wizarding men except him?"

"Or Magic itself is being selective," Hermione theorized. "Ensuring population control by limiting who can procreate without magic..."

They bounced ideas back and forth, everyone contributing perspectives until Harry held up his hand.

"Two solid theories - either I'm immune to some ancient curse, or Magic is playing population control. But first..." He grinned wickedly. "We need to analyze that potion properly next time."

A chorus of groans met his announcement.

"No fun experiments?" Padma pouted.

Harry rolled his eyes. "You can all experiment privately if you're that desperate."

Their immediate cheering made him laugh. "Honestly, you're all children. Now get some rest - actual research tomorrow."

They gathered their clothes, exchanging kisses and touches before heading out. Harry watched them go with fond exasperation. Who knew academic research could be so entertaining?

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